Chinese Kangxi famille-verte porcelain has very refined paste producing a fine grained porcelain and the glaze tends to be thin, with a luminous and slightly blue glaze whereas the glaze on the 19th century copies are often thicker and very greyish in comparison.However, there are exceptions to the rule) Towards the end of the Kangxi period famille-verte porcelain gave way to porcelain with new colours including, pink (the primary colour in famille-rose) opaque yellow, and opaque lime-green and opaque turquoise.
Fluorescamine is a spiro compound that is not fluorescent itself, but reacts with primary amines to form highly fluorescent products. It hence has been used as a reagent for the detection of amines and peptides. 1-100 Âµg of protein and down 10pg protein can be detected.
Oceanographers and hydrologists have historically used fluorescein to trace the flow of currents through bodies of water of interest. In this case, a load known as the âpoint sourceâ is released in a set location and followed as it moves through the water.